package com.atguigu.tingshu.album.service.impl;

import com.alibaba.fastjson.JSONObject;
import com.atguigu.tingshu.album.mapper.*;
import com.atguigu.tingshu.album.service.BaseCategoryService;
import com.atguigu.tingshu.model.album.*;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

@Service
@SuppressWarnings({"all"})
public class BaseCategoryServiceImpl extends ServiceImpl<BaseCategory1Mapper, BaseCategory1> implements BaseCategoryService {

	@Autowired
	private BaseCategory1Mapper baseCategory1Mapper;

	@Autowired
	private BaseCategory2Mapper baseCategory2Mapper;

	@Autowired
	private BaseCategory3Mapper baseCategory3Mapper;


	@Autowired
	private BaseCategoryViewMapper baseCategoryViewMapper;

	@Autowired
	private BaseAttributeMapper baseAttributeMapper;


	@Override
	public List<JSONObject> getBaseCategoryList() {
		//创建集合对象
		List<JSONObject> list = new ArrayList<>();
		//查看所有分类数据
		List<BaseCategoryView> baseCategoryViewList = baseCategoryViewMapper.selectList(null);
		//按照一级分类id进行分组，key：一级分类ID，value：以及分类ID对应的集合数据
		Map<Long,List<BaseCategoryView>> map = baseCategoryViewList.stream().collect(Collectors.groupingBy(BaseCategoryView::getCategory1Id));
		//循环遍历数据
		for(Map.Entry<Long,List<BaseCategoryView>> entry : map.entrySet()){
			//获取到一级分类
			Long category1Id = entry.getKey();
			//再从一级分类Id，对应的集合获取数据
			List<BaseCategoryView> category1ViewList = entry.getValue();
			//声明一级分类对象
			JSONObject category1 = new JSONObject();
			category1.put("categoryId",category1Id);
			category1.put("categoryName",category1ViewList.get(0).getCategory1Name());
			//按照二级分类Id，进行分组
			Map<Long,List<BaseCategoryView>> map2 = category1ViewList.stream().collect(Collectors.groupingBy(BaseCategoryView::getCategory2Id));
			//声明二级分类对象集合
			List<JSONObject> category2Child = new ArrayList<>();
			//循环遍历
			for(Map.Entry<Long,List<BaseCategoryView>> entry2 : map2.entrySet()){
				//获取到二级分类ID
				Long category2Id = entry2.getKey();
				//获取二级分类ID，对应的集合数据
				List<BaseCategoryView> category2ViewList = entry2.getValue();
				//创建二级分类对象
				JSONObject category2 = new JSONObject();
				category2.put("categoryId",category2Id);

				category2.put("categoryName",category2ViewList.get(0).getCategory2Name());
				//声明三级分类对象数据
				List<JSONObject> category3Child = new ArrayList<>();
				for(BaseCategoryView baseCategoryView: category2ViewList){
					//获取
					JSONObject category3 = new JSONObject();
					category3.put("categoryId", baseCategoryView.getCategory3Id());
					category3.put("categoryName",baseCategoryView.getCategory3Name());
					category3Child.add(category3);

				}
				//将三级分类放到二级分类内
				category2.put("categoryChild",category3Child);
				//将二级分类加到集合中
				category2Child.add(category2);
				//将二级分类加到以及分类里面
				category1.put("categoryChild",category2Child);
			}

			//将一级分类加到集合中
			list.add(category1);
		}
		return list;
	}

	@Override
	public List<BaseAttribute> findAttributeByCategory1Id(Long category1Id) {
		return baseAttributeMapper.selectBaseAttributeList(category1Id);
	}

	@Override
	public BaseCategoryView getCategoryViewByCategory3Id(Long category3Id) {
		return baseCategoryViewMapper.selectById(category3Id);
	}

	@Override
	public JSONObject getBaseCategoryList(Long category1Id) {
		//创建一个一级分类对象
		JSONObject category1 = new JSONObject();
		//封装页面需要得数据集
		category1.put("categoryId",category1Id);
		//根据业务分析通过一级分类Id查询视图比较方便；
		List<BaseCategoryView> baseCategoryViewList = baseCategoryViewMapper.selectList(new LambdaQueryWrapper<BaseCategoryView>().eq(BaseCategoryView::getCategory1Id,category1Id));
		//获取一级分类名称
		category1.put("categoryName",baseCategoryViewList.get(0).getCategory1Name());
		//需要封装二级，三级分类数据
		Map<Long,List<BaseCategoryView>> baseCategory2Map = baseCategoryViewList.stream().collect(Collectors.groupingBy(BaseCategoryView::getCategory2Id));
		Iterator<Map.Entry<Long, List<BaseCategoryView>>> iterator = baseCategory2Map.entrySet().iterator();
		//声明二级分类集合
		List<JSONObject> categoryChild2List = new ArrayList<>();
		while (iterator.hasNext()){
			//获取entry对象
			Map.Entry<Long,List<BaseCategoryView>> entry = iterator.next();
			//获取二级分类Id
			JSONObject category2 = new JSONObject();
			category2.put("categoryId",entry.getKey());
			//获取二级分类名称
			category2.put("categoryName",entry.getValue().get(0).getCategory2Name());
			//存储三级分类数据
			List<JSONObject> categoryChild3List = entry.getValue().stream().map(baseCategoryView -> {
				//创建三级分类
				JSONObject category3 = new JSONObject();
				category3.put("categoryId",baseCategoryView.getCategory3Id());
				category3.put("categoryName",baseCategoryView.getCategory3Name());
				//返回数据
				return category3;
			}).collect(Collectors.toList());
			//将三级分类数据保存到二级中
			category2.put("categoryChild",categoryChild3List);
			//将二级分类对象添加到集合中
			categoryChild2List.add(category2);
		}
		//将二级分类数据保存到以及分类中
		category1.put("categoryChild",categoryChild2List);
		//返回一级分类对象
		return category1;
	}

	@Override
	public List<BaseCategory3> findTopBaseCategory3(Long category1Id) {
		/*List<Long> category2IdList = baseCategory2Mapper.selectList(
				new LambdaQueryWrapper<BaseCategory2>().
						eq(BaseCategory2::getCategory1Id,category1Id))
				.stream().map(BaseCategory2::getId).collect(Collectors.toList());
		//构建搜索条件
		LambdaQueryWrapper<BaseCategory3> baseCategory3LambdaQueryWrapper = new LambdaQueryWrapper<>();
		baseCategory3LambdaQueryWrapper.in(BaseCategory3::getCategory2Id,category2IdList).eq(BaseCategory3::getIsTop,1).last(" limit 7 ");
		//返回三级分类数据集合
		return baseCategory3Mapper.selectList(baseCategory3LambdaQueryWrapper);*/
		List<Long> category2IdList = baseCategory2Mapper.selectList
						(new LambdaQueryWrapper<BaseCategory2>().
								eq(BaseCategory2::getCategory1Id, category1Id))
				.stream().map(BaseCategory2::getId).collect(Collectors.toList());
		//	构建查询条件;
		LambdaQueryWrapper<BaseCategory3> wrapper = new LambdaQueryWrapper<>();
		wrapper.in(BaseCategory3::getCategory2Id,category2IdList).eq(BaseCategory3::getIsTop,1).last(" limit 7 ");
		//	返回三级分类数据集合
		return baseCategory3Mapper.selectList(wrapper);
	}
}
